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8 Cards in this Set
- Front
- Back
What is the nervous system needed for?
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To help to coordinate and body control the body
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What is a receptor for?
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An organ or body part that detects a change (stimulus) in the surroundings
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Receptors: Eyes Ears Skin Tongue Nose |
Stimuli: Light Sound Touch/pressure/pain Taste Smell |
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What is a neurone?
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A specialised cell in the nervous system |
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Neurone: Sensory Relay Motor |
Function: Send impulses from receptors in the sense organs to the CNS The link sensory and motor neurones Send impulses from the CNS to muscles and glands |
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Describe what happens in a reflex arc
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Automatic response to a stimulus can bypass the CNS
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Label the parts: A-Receptors (reacts to a stimulus) B-Sensory Neurone (carries message to the co-ordinator/CNS) C-Relay Neurone Gaps between neurones are called SYNAPES D-Motor Neurone (carries message away from co-ordinator/CNS) E-Effector (a muscle or gland) |
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How does the nervous system transmit information in the body?
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Via electrical signals- impules
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